Teacher Guide

(G)
Simple comparisons at
www.bbc.co.uk/schools/gcsebitesize/ict/
hardware/1datastoragerev2.shtml
Useful reinforcement material:
http://computer.howstuffworks.com/
bytes.htm
1.1.2
• understand 
hexadecimal 
notation and to convert 
hexadecimal integers to and 
from binary and denary
• understand the signifi cance 
of hexadecimal in computer 
systems
Teacher presentation on hexadecimal notation and its 
relationship to binary notation. Demonstration of the 
conversion of binary and denary to hexadecimal. 
(W)
Learners convert positive hexadecimal integers to and 
from binary and to and from denary. 
(I)
Class brainstorm to show understanding of the 
reasons for choosing hexadecimal to represent 
numbers, e.g. those stored in registers and main 
memory. 
(W)
Learners answer previous exam/textbook questions 
on hexadecimal representation. 
(I)
Hexadecimal counter – for example:
www.mathsisfun.com/binary-decimal-
hexadecimal-converter.html
Cambridge IGCSE Computer Studies Revision 
Book Chp 11.5 – sample questions in 11.6

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Appendix B:
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Syllabus ref
Learning objectives
Suggested teaching activities
Learning resources
1.3.2
1.1.1
1.1.2
• show understanding of the 
basic Von Neumann model 
for a computer system and 
the stored program concept
• describe the stages of the 
fetch-execute cycle
• recognise the use of binary in 
computer registers
• identify current uses of 
hexadecimal e.g. assembly 
languages and machine code, 
debugging etc.
Teacher presents basic concepts of computer 
architecture, including registers, and the fetch-execute 
cycle followed by demonstration via projector of the 
Little Man Computer (LMC).